Roofer Mountain Ash
Roof repairs, re-roofs, flat roofing and roofline work across Mountain Ash and the lower Cynon Valley - K Williams Roofing is a family-run local team with free quotes and guaranteed workmanship.
- Fully insured
- Free quotes
- Emergency callouts
- Local roofing specialists
Your Local Roofing Team in Mountain Ash
Mountain Ash roofs work hard. Rows of terraces climb the valley sides from Miskin to Penrhiwceiber, and the higher up the mountain you live, the more weather your slates take. We repair, maintain and replace every kind of roof this town has - and we have been doing it for over 30 years.
Steep streets and tight terraces also make access half the job here. We plan scaffold and access properly, price it into the written quote, and keep the disruption to you and your neighbours to a minimum.
From a slipped slate above a bedroom window to a complete strip and re-tile, you get the same thing every time: a straight answer, a free written quotation and work that is done once and done right.
Our Roofing Services
One local team for every roofing job in Mountain Ash - repairs, replacements and everything in between.
Slating & Tiling
Traditional slate and tile work for the terraces and stone homes of the Cynon Valley.
Find out moreFlat Roofing
Long-lasting flat roof systems for extensions, garages, dormers and bay windows.
Find out moreFascias & Soffits
uPVC fascias, soffits and bargeboards that end the repainting cycle for good.
Find out moreRoof Maintenance
Yearly inspections and small fixes that stop big bills before they start.
Find out moreStrip & Re-Tile
Complete strip and re-tile projects - the permanent answer for a roof past repair.
Find out moreGuttering
Gutters repaired, replaced and cleared to cope with everything the valley sky drops.
Find out moreEmergency Roof Repairs
Storm damage or a sudden leak? Fast emergency response across Mountain Ash.
Find out moreChimney Repairs
Repointing, rebuilds and lead work for stacks that face the worst of the weather.
Find out moreSkylights
Roof windows fitted properly to bring light into dark valley terraces.
Find out moreRubber Roofing
Seamless EPDM rubber roofs with a 40-year-plus life for garages and extensions.
Find out more
Why Mountain Ash Homeowners Call Us
Because we turn up, we quote straight, and our work outlasts the guarantee we put on it.
Local Roofing Experts
We work the length of the Cynon Valley every week - Mountain Ash, its villages and everything between.
Fully Insured
Comprehensive public liability insurance for total peace of mind on every single job.
Fast Response Times
Fast callouts across Mountain Ash, Penrhiwceiber, Abercynon and the surrounding villages.
Quality Materials
Trusted, weather-proven slates, tiles and membranes from leading suppliers.
Competitive Pricing
Fair, transparent quotes with no hidden extras — and never any pressure.
Guaranteed Workmanship
Our work is backed by a workmanship guarantee you can rely on.
Recent Roofing Work by Our Team
A few recent jobs completed by our team across the South Wales valleys.
Merthyr TydfilNew Roof with Fascias & Gutters
Complete re-roof on Balaclava Road with new interlocking tiles, a dry ridge system, and new fascias and gutters throughout.
View project- Quakers Yard
EPDM Rubber Flat Roof
Flat roof re-covered with a seamless EPDM rubber membrane for a clean, watertight finish.
View project - Heolgerrig
Large Re-Roof in Grey Tile
Large property fully re-roofed in grey interlocking tiles with new fascias and guttering to match.
View project
Areas We Cover Around Mountain Ash
- Penrhiwceiber
- Miskin
- Cefnpennar
- Darranlas
- Caegarw
- Ynysboeth
- Abercynon
K Williams Roofing covers Mountain Ash and the whole lower Cynon Valley - Penrhiwceiber, Miskin, Cefnpennar, Cwmpennar, Darranlas, Caegarw, Fernhill, Perthcelyn, Ynysboeth, Matthewstown and Abercynon. Same free quote, same guaranteed workmanship, wherever you are.
Frequently Asked Questions
Straight answers to the questions Mountain Ash homeowners ask us most.
What does a new roof cost in Mountain Ash?
It depends on the size and pitch of the roof, the covering you choose and – especially on the steeper terraces – the access required. Every quotation is free, written and itemised, so you see exactly where the money goes before anything starts.
Do you work on the steep terraced streets?
All the time – steep access is normal for us in Mountain Ash. We plan scaffold properly, keep the street usable and always include access costs in the written quote rather than springing them on you later.
How quickly can you come out after a storm?
For genuine emergencies we aim for same-day attendance across Mountain Ash and the surrounding villages – and we will give you an honest arrival time when you call 07952 811592.
Can you repair my roof, or will you push a re-roof?
If a repair will genuinely last, we do the repair – most of our work is exactly that. When a roof is truly past it we will show you why, with photos, and let you make the decision.
Are your quotations really free?
Yes – inspection, honest advice and a written, itemised quote, all free and with no obligation and no pressure.
Which areas around Mountain Ash do you cover?
The whole lower Cynon Valley – Penrhiwceiber, Miskin, Cefnpennar, Darranlas, Caegarw, Fernhill, Perthcelyn, Ynysboeth and Abercynon.
Need a Reliable Roofer in Mountain Ash?
From emergency repairs to complete re-roofs anywhere in the lower Cynon Valley, we are ready to help. Get your free, no-obligation quote today.
Call us today: 07952 811592